package selectCourse;

public class Student extends a {
    String b;
    String d;
    String lesson;
    public Student(int id, String name, String sex,String lesson,String b,String d) {
        super(id, name, sex);
        this.id = id;
        this.name = name;
        this.sex = sex;
        this.lesson=lesson;
        this.b=b;
        this.d=d;
    }

    public String toString() {
        return "编号:" + id + "  姓名:" + name + "  性别:"+sex +"  课程:"+lesson;
    }

    void xuanke() {

        if(b=="已选");
        {
            System.out.println("这个学生已选课");
        }
    }

    void delete() {

        if(d=="未退");
        {
            System.out.println("这个学生未退课");
        }
    }
}